161 lines
5.4 KiB
C
161 lines
5.4 KiB
C
/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
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#ifndef __dj_include_tzfile_h__
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#define __dj_include_tzfile_h__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef __dj_ENFORCE_ANSI_FREESTANDING
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#ifndef __STRICT_ANSI__
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#ifndef _POSIX_SOURCE
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/*
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* Copyright (c) 1988 Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Arthur David Olson of the National Cancer Institute.
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*
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* Redistribution and use in source and binary forms are permitted provided
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* that: (1) source distributions retain this entire copyright notice and
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* comment, and (2) distributions including binaries display the following
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* acknowledgement: ``This product includes software developed by the
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* University of California, Berkeley and its contributors'' in the
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* documentation or other materials provided with the distribution and in
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* all advertising materials mentioning features or use of this software.
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* Neither the name of the University nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* @(#)tzfile.h 5.9 (Berkeley) 6/11/90
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*/
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/*
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** Information about time zone files.
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*/
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/* Time zone object file directory */
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#define TZDIR "/hd/1/menuetos/zoneinfo"
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#define TZDEFAULT "/hd/1/menuetos/localtim"
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#define TZDEFRULES "posixrul"
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/*
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** Each file begins with. . .
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*/
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struct tzhead {
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char tzh_reserved[24]; /* reserved for future use */
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char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
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char tzh_leapcnt[4]; /* coded number of leap seconds */
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char tzh_timecnt[4]; /* coded number of transition times */
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char tzh_typecnt[4]; /* coded number of local time types */
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char tzh_charcnt[4]; /* coded number of abbr. chars */
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};
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/*
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** . . .followed by. . .
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**
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** tzh_timecnt (char [4])s coded transition times a la time(2)
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** tzh_timecnt (unsigned char)s types of local time starting at above
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** tzh_typecnt repetitions of
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** one (char [4]) coded GMT offset in seconds
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** one (unsigned char) used to set tm_isdst
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** one (unsigned char) that's an abbreviation list index
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** tzh_charcnt (char)s '\0'-terminated zone abbreviations
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** tzh_leapcnt repetitions of
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** one (char [4]) coded leap second transition times
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** one (char [4]) total correction after above
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** tzh_ttisstdcnt (char)s indexed by type; if TRUE, transition
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** time is standard time, if FALSE,
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** transition time is wall clock time
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** if absent, transition times are
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** assumed to be wall clock time
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*/
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/*
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** In the current implementation, "tzset()" refuses to deal with files that
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** exceed any of the limits below.
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*/
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/*
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** The TZ_MAX_TIMES value below is enough to handle a bit more than a
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** year's worth of solar time (corrected daily to the nearest second) or
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** 138 years of Pacific Presidential Election time
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** (where there are three time zone transitions every fourth year).
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*/
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#define TZ_MAX_TIMES 370
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#define NOSOLAR /* 4BSD doesn't currently handle solar time */
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#ifndef NOSOLAR
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#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
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#else
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#define TZ_MAX_TYPES 10 /* Maximum number of local time types */
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#endif
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#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
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#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
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#define SECSPERMIN 60
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#define MINSPERHOUR 60
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#define HOURSPERDAY 24
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#define DAYSPERWEEK 7
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#define DAYSPERNYEAR 365
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#define DAYSPERLYEAR 366
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#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
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#define SECSPERDAY ((long) SECSPERHOUR * HOURSPERDAY)
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#define MONSPERYEAR 12
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#define TM_SUNDAY 0
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#define TM_MONDAY 1
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#define TM_TUESDAY 2
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#define TM_WEDNESDAY 3
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#define TM_THURSDAY 4
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#define TM_FRIDAY 5
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#define TM_SATURDAY 6
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#define TM_JANUARY 0
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#define TM_FEBRUARY 1
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#define TM_MARCH 2
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#define TM_APRIL 3
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#define TM_MAY 4
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#define TM_JUNE 5
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#define TM_JULY 6
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#define TM_AUGUST 7
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#define TM_SEPTEMBER 8
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#define TM_OCTOBER 9
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#define TM_NOVEMBER 10
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#define TM_DECEMBER 11
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#define TM_YEAR_BASE 1900
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#define EPOCH_YEAR 1970
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#define EPOCH_WDAY TM_THURSDAY
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/*
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** Accurate only for the past couple of centuries;
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** that will probably do.
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*/
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#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0)
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#endif /* !_POSIX_SOURCE */
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#endif /* !__STRICT_ANSI__ */
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#endif /* !__dj_ENFORCE_ANSI_FREESTANDING */
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#ifndef __dj_ENFORCE_FUNCTION_CALLS
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#endif /* !__dj_ENFORCE_FUNCTION_CALLS */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __dj_include_tzfile_h__ */
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